Apparatus for distributing concrete.



A. D. MOSBY.

APPARATUS Fox msmums CONCRETE.

APPLICATION FILED MAR. I9. I9I5.

Patented May 28,1918.

\ j i EL) A TTORNE Ys A. D. MOSBY.

APPARATUS FOR DISTRIBUTING CONCRETE.

APPLICATION FILED MAR. i9, |915.

Patented May 28,1918.

2 SHEETS- SHEET `2.

ns rn ALFRED D. MOSBY, 0F CHICAGO, ILLINOIS, ASSIGNOR- TO MARSH-CAPRON MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

APPARATUS FOR DISTRIBUTING CONCRETE.

Specification of Letters Patent.

Patented May 28, 1918.

Application filed March 19, 1915. Serial No. 15,539.

To all whom t may concern:

Be it known that I, ALFRED D. MoSBx, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Apparatus for Distributing Concrete, of which the following is a specification.

My invention relates to apparatus for distributing material such as mixed concrete, for example, and the principal object of the invention is to provide an apparatus suitable for use in connection with a concrete mixer which may be supported, if desired, on the truck or other structure supporting the mixing drum and the other apparatus constituting the concrete mixing machine, and which is adapted to receive batches of mixed concrete from the mixer and to deliver the same at dierent points, according to the requirement of the particular job. The device of my invention is of particular utility as forming part of a machine for laying concrete pavements or concrete foundations for pavements in streets, alleys, or the like. In this kind of work the concrete has to be distributed over a considerable area. It is not convenient to move the machine itself from place to place for each batch of conc-rete delivered from the mixer. The customary way is to use hand barrows for making the distribution. This is 1aborious and expensive.

My invention Lprovides a relatively inexpensive, simple, and compact apparatus for accomplishing the distribution of concrete workA of this sort by means of a gravity chute. Concrete mixers are frequently provided with tilting discharge troughs which, in their tilted down position, discharge the mixed concrete out of the drum by gravity. It is not possible to utilize this kind of a device for discharging the concrete toa point at any considerable distance from the mixing drum. In order that mixed concrete should be dischargedl by gravity through a chute or trough, the inclination of the latter must be considerable-approximately at a slant of one to three. If the ordinary discharge trough is made long enough to roach for any distance from the drum, the slant will not be suiiicient to cause a gravity discharge of the material, unless the mixin machine be raised to a very considerable height aber-r1. the ground, This is not da sirable, as it necessitates an additionalpower and labor in elevating the ingredients of the concrete, and for other reasons which will be apparent.

My invention consists in certain novel arrangements, constructions and devices, to be hereinafter described and claimed, whereby the distribution of the concrete at points remote from the mixer may be accomplished without raising the mixing machine from its normal position above the grade. The invention further consists in certain other novel and improved constructions and devices relating to concrete mixing machines, and particularly means for distributing the 'concrete after it is mixed, which will be hereinafter more particularly described.

The invention is illustrated in two somewhat di'erent embodiments, both apparatuses, however, operating upon the same general principles.

In the drawings:

Figure 1 shows, in side elevation, one form of the invention;

Fig. 2, a fragmentary side elevation of the distributing chute showing a gate in its open position for discharging the concrete at a point `in advance of the end of the chute; and

Fig. 3, a view similar to Fig. 1, illustrating a modified construction. l

Like characters of reference designate like parts in the severalfigures of the drawings.

Referring first to Figs. 1 and 2, 10 designates a mixing drum of the revoluble type, provided with a gear ring 11 meshed by a pinion 12 on a driving shaft 13. The drum and the mechanism for driving the same are shown only fragmentarily. Any suitable form of mixer might be employed. The

mixing drum and associated apparatuses are shown as supported on a truck 14. The mixed concrete is discharged from the drum by means of a tilting discharge trough 15, the full lines showing the trough in its discharging position and the dotted lines in its the form of a hopper 24 between which and the-chute proper isagate 25 carried on a rocking'shaft 26 having an oi'ierating handle 27. The purpose of the gate is to retain the material in thehopperend of the chute until the time comes to discharge it. The normal or receiving position off the chute is shown in the full-lines, Fig. 1. In this position the hopper 24 stands just below the endv of the discharge trough 1 5 iin-the discharging position ofl the latter. Mechanismlof any suitable sort is providedfor tilting` the distributing chute 20 to the p osition shownin the dotted lines in Fig.. 1, that' is, to its discharging` position. For example, the hopperA or receiving end of the chute may be provided Withva bail 2S, attached toivhicli is a cable 29 that extends over shea-ves 30, 3 1 o n the boom-19 and over sheaves 32, 33 on the' framevvorkrlS, and thence to a Winding drum 34 adapted to be connected by a clutch 35 to the driving. shaftl 13 of the mixer. n

Operation: When a. batch of concrete. has been properly mixed, the dicharge trough 15 is tilteddovvn from the dotted positionto the full line position andthe concrete is thereupon discharged intoy the receiving hopper 24' ofthe distributing chute 20. Gate :25 is closed ordinarily. The discharge trough 15 is then moved backto its inoperative position and the AW-indiiig.; drum' 34 clutched to shaft 13. The distributing trough is then raised to its discharging position, the position shoivn in the dotted lines in Fig.. 1.. The Winding drum is preferably providedivith aband-brake device 36 adapted, when thedrum 34, is released from shaft 18, to hold the drum from turning. The bandfbrake has an oper-ating lever 37 which is adapted to release the band so as to *allow the distributing chute Ato` descend slowlyY after it has discharged the batch.. s

Either lbefore or. after the distributing trough has been elevated to its discharging positiony the boom- 19 may be swung on its pivots 16, 17 to such extent as may be necessary to cause the delivery 'of the batch to the right place' on the grade.y This may bel done by hand or by means of any suitable mechanism@ To discharge the material the gate 25 is raised. n The discharge takes-place by gravity. Preferably ythedistributingchute is constructed as shown in my. cov-pending application, Serial No. 2890-led. January 1,8, 1915, with one or more-gatesV 3S Whichy may be dropped soas to. discharge the material before it reaches the end of the chute` In Fig. 3 I have-showna modified construction in lwhichl the distributing chute designated V2O? is vshit-ted inwardly toward the'truck during;I its tilting movement after ithas cleared thexend of the discharge trough f otthem'iXe-r. .Thedistributing chute in this coi'istrllction is attached to the end of the boom 19tL by means of links 39. The boom is provided with tracks ,40; the upper: endsof which are curved: The hopperzend 24a of the distributing chute is provided with pairs ofV rollers 4:1 standing on opposite sides of the tracks 40. The curvature of the tracks causes the chute to be shifted inwardly duringA its tiltingmovement, the shifting movement commencing after the chute has cleared the end of the up-tilteddischarge trough ol' the. mixer. The object of this arrangement is to maintain the center ofA gravity` oi' the `chute and itsload as close to the truck as possible, thereby minimizing the' tendency to instability.`

While I- have described my inventionin certain preferred embodiments, it ivill be realized that. modifications might4 be made, other than those. suggestedwithout depar ture from-the principles of the invention.

.on the chute, and meansfor hoisting thereceiving end of said chute substantially vertically along said guide members.

2. In `apparatus of thecharacter described, the `combination Withtlie supporting frame, of a. boom vertically'pivoted to; said; supporting iframe, a distributing chute,v pivotally `secured near itsdischarge end to the outer end of the boom and.` provided. at. its inner `end With a receiving*k hopper, guide members on theboom, guidel rollers onA the chute, and means for hoisting the receiving end of said chute substantially vertically along said guide members so-as to tiltI the same to its discharge position.

3. Iny apparatus of thecharact-er described,

the combination with a supporting frame,

of a boom ,pivotedfon a-fve'rtiical axis to-said supportingframe, a.- chute pivotally secured to the boom. means for tiltingsaidl chuteto its dischargingpositio11,.aiid a guiding track l' vv-hich at the same time shiftstl'ie chute bodily toivard said supportingY frame.

4:. In apparatus ofi the character described, the' combination with a supporting frame, of a distributing chute; a" piv'otedl linken which the outer end oi' sai-dfchute ismounted.

means for hoisting the inner end of said chutef'so' as to tilt: the same toits ldischarging position, and means Jfor causing :the chute, Whenraised, to m'oveinwardlv toward the supporting frame.

5. In apparatus of the character described, the combination with a supporting frame, of a boom pivote-d on a vertical axis to said supporting frame, a chute pivotally secured to the boom, means for tilting said chute to its discharging position, and an automatically operated gate in said chute to retain the material in the receiving end of the chute.

6. In apparatus of the character described, the combination with the supporting frame, of a distributing chute, means providing a shifting pivot for the outer end of said chute, means for hoisting the inner end of said chute so as to tilt the same to its discharging position, and guiding means for causing the chute, when raised, to be moved inwardly toward the supporting frame.

7. In apparatus of the character described, the combination with a supporting frame, of a distributing chute, means providing a shifting pivot for the outer end of said chute, means for hoisting` the inner end oi said chute so as to tilt the same to its discharging position, a curved guiding track, and rollers on said chute which engage said track for the purpose described.

8. In apparatus of the character described, the combination with a supporting frame, of a distributing chute, means providing a shifting pivot for the outer end of said chute, means for hoisting the inner end of said chute so as to tilt the same to its discharging position, a curved guiding track, rollers onv said chute which engage said track to shift the chute bodily on the supporting frame, a gate to retain the material in said hopper, and a cam on said track adapted to automatically operate said gate.

9. In apparatus of the character described, the combination with a source of supply for the material to be distributed, of a dis tribut-,ing chute provided at its inner end with a receiving hopper, the rear edge of which, when in position to receive material, is overhung by the discharge spout of said source of supply, means providing a shitting pivot Jfor the outer end of said chute, means for tilting said chute, and means for causing the chute to shift outwardly from said source of supply so as to clear said discharge spout and then shift inwardly after the spout is cleared while the said chute 1s being tilted.

10. The combination with a receptacle for material, of a spout, means to deliver maf through which said cable is wound up and let E.

ALFRED D. MOSBY. lVitnesses L. A. FALKENBERG, G. Y. SKINNEB.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, 2D. C. 

